2x-(x+3-3(x+1)怎么解
问题描述:
2x-(x+3-3(x+1)怎么解
答
2x-(x+3-3(x+1)
=2x-x-3-3x-3
=-2x
2x-(x+3-3(x+1)怎么解
2x-(x+3-3(x+1)
=2x-x-3-3x-3
=-2x